背景图片的自定义

body：

 .landing-bg {
　　height: 100%;
　　background: url(背景链接地址) no-repeat;
　　-webkit-background-size: cover;
　　-moz-background-size: cover;
　　-ms-background-size: cover;
　　-o-background-size: cover;
　　 background-size: cover;
　　overflow: hidden;
}

Div上定义背景图片

.s-skin-container {

position: absolute;
top: 0;
left: 0;
height: 100%;
width: 100%;
z-index: -10;
background-position: center 0;
background-repeat: no-repeat;
background-attachment: fixed;
background-size: cover;
-webkit-background-size: cover;
-o-background-size: cover;
zoom: 1;

}